That is also why I do not believe it is possible for any insiders to buy on the open market at this time; most likely insiders have been on blackout for a long time.

Maybe the answer to the question of why so little insider buying is that given their current self- and contractually-imposed secrecy, there might be almost no calendar days anytime soon on which insider buying could legally occur. On that score, would a news release saying that this is why they cannot purchase (if true) by its very nature violate the terms of their NDA(s)?